apps/OboeTester/app/src/main/res/layout/comm_device_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <CheckBox
            android:id="@+id/setSpeakerphoneOn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="false"
            android:text="setSpeakerphoneOn" />

        <TextView
            android:id="@+id/isSpeakerphoneOn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text=" => ?" />

    </LinearLayout>

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Comm Device: " />

        <com.mobileer.audio_device.CommunicationDeviceSpinner
            android:id="@+id/comm_devices_spinner"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </LinearLayout>
</LinearLayout>